<template>
    <div>
         <!-- 头部 -->
         <header class="header">
            <!-- 头部的第一行 -->
            <div class="top">
                <div class="container">
                    <div class="loginList">
                        <p>尚品汇欢迎您！</p>
                         <p v-if="userInfo.name">
                            <span>您好，欢迎{{userInfo.name}}&nbsp;</span>
                            <button @click="logout">&nbsp;&nbsp;退出</button>
                        </p>
                        <p v-else>
                            <span>请</span>
                            <router-link to="/login">登录</router-link>
                            <router-link to="/register" class="register">免费注册</router-link>
                        </p>
                       
                    </div>
                    <div class="typeList">
                        <a href="###">我的订单</a>
                        <router-link to="/shopCart">我的购物车</router-link>
                        <a href="###">我的尚品汇</a>
                        <a href="###">尚品汇会员</a>
                        <a href="###">企业采购</a>
                        <a href="###">关注尚品汇</a>
                        <a href="###">合作招商</a>
                        <a href="###">商家后台</a>
                    </div>
                </div>
            </div>
            <!--头部第二行 搜索区域-->
            <div class="bottom">
                <h1 class="logoArea">
                    <router-link class="logo" title="尚品汇" to="/home">
                        <img src="./images/logo.png" alt="">
                    </router-link>
                </h1>
                <div class="searchArea">
                    <form action="###" class="searchForm">
                        <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" />
                        <button class="sui-btn btn-xlarge btn-danger" type="button" @click="search">搜索</button>
                    </form>
                </div>
            </div>
        </header>
    </div>
</template>

<script>
import { mapActions, mapState } from 'vuex'
    export default {
        name:"Header",
        data(){
            return{
                keyword:""
            }
        },
        computed:{
            ...mapState('user',['userInfo'])
        },
        methods:{
            ...mapActions('user',['userLogout']),
            // 1. 使用编程式导航实现组件跳转
            search(){
                const {query} = this.$route
                //this.$router.push("/search") 编程式导航点击多次会出现控制台的报错问题
                this.$router.push({
                    name:"search",
                    query,
                    params:{
                        keyword:this.keyword || undefined   //跳转的时候路由会自动过滤掉undefined元素
                    }
                    // query:{
                    //     ...query,
                    //     keyword:this.keyword || undefined
                    // }

                })
            },
            // 2.退出登录
            logout(){
                this.userLogout()
            }
        },
        mounted(){
            //注册全局事件总线
            this.$bus.$on("remove-keyword",()=>{
                this.keyword = ''
            })
        },
        beforeDestroy(){
            this.$bus.$off("remove-keyword")
        }
    }
</script>

<style lang="less" scoped>
 .header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;

            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;

                .loginList {
                    float: left;

                    p {
                        float: left;
                        margin-right: 10px;

                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }

                .typeList {
                    float: right;

                    a {
                        padding: 0 10px;

                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }

                }

            }
        }

        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .logoArea {
                float: left;

                .logo {
                    img {
                        width: 175px;
                        margin: 25px 45px;
                    }
                }
            }

            .searchArea {
                float: right;
                margin-top: 35px;

                .searchForm {
                    overflow: hidden;

                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;

                        &:focus {
                            outline: none;
                        }
                    }

                    button {
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>